TPS23881
- IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applications
- Eight independent PSE channels
- Compatible with TI’s FirmPSE system firmware
- SRAM Programmable memory
- Programmable power limiting accuracy ±2.5%
- 200-mΩ current sense resistor
- Legacy PD capacitance measurement
- Selectable 2-pair or 4-pair port power allocations
- 15.4 W, 30 W, 45 W, 60 W, 75 W or 90 W
- Single and dual signature PD compatibility
- Dedicated 14-bit integrating current ADC per port
- Noise immune MPS for DC disconnect
- 2% current sensing accuracy
- 1- or 3-bit fast port shutdown input
- Auto-class discovery and power measurement
- Inrush and operational foldback protection
- Flexible processor controlled operating modes
- Auto, semi auto and manual / diagnostic
- Per port voltage monitoring and telemetry
- –40°C to +125°C temperature operation
- Ultra Low Alpha (ULA) packaging (TPS23881A)
The TPS23881 is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The eight individual power channels can be configured in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.
The TPS23881 improves on the TPS23880 with reduced current sense resistors, more accurate programmable power limiting, capacitance measurement and the ability to operate from ROM (see Device Comparison Table). The TPS23881 is also compatible with TIs FirmPSE system firmware, which provides a fully configurable solution for controlling multiple TPS23881 devices in systems offering up to 48-ports of 4-pair PoE power.
Programmable SRAM enables in-field firmware upgradability over I 2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A ±2.5% accurate programmable port power limit provides the ability to expand the maximum power sourced from 90 W to upwards of 125 W. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements.
- TPS23881 제품 공지 및 최신 펌웨어 업데이트가 있습니다. 지금 요청
- TI의 FirmPSE 시스템 펌웨어, GUI, 호스트 인터페이스 프로토콜 및 FirmPSE 권고가 제공됩니다. 지금 요청
- TPS23881와의 상호운용성 신뢰도에 대한 TI의 PoE 2 적합성 테스트 보고서를 확인해 보세요.
기술 문서
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | TPS23881 Type-4 4-Pair 8-Channel PoE 2 PSE Controller with SRAM and 200 mΩ RSENSE datasheet (Rev. E) | PDF | HTML | 2023/05/16 |
Application brief | How to Load TPS2388x SRAM and Parity Code Over I2C (Rev. E) | PDF | HTML | 2023/04/20 | |
Application brief | Choosing PoE PSE System Software Solutions | PDF | HTML | 2021/08/03 | |
Test report | TPS23881 PoE2 Test Report | 2020/05/26 | ||
Technical article | The ABCs and 123s of PoE | PDF | HTML | 2020/04/17 | |
Technical article | Get more out of your power supply with port power management | PDF | HTML | 2019/11/11 | |
Design guide | 24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multi-port Applic (Rev. A) | 2019/10/15 | ||
Analog Design Journal | Challenges and solutions for PoE systems in Ethernet switches | 2019/09/30 | ||
EVM User's guide | TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module (Rev. A) | 2019/08/08 | ||
EVM User's guide | TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module | 2019/04/24 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
PSEMTHR24EVM-081 — 24포트 IEEE 802.3bt 지원 PSE 시스템용 마더보드
PSEMTHR24EVM-081 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.
PSEMCUDAUEVM-082 — 24포트 IEEE 802.3bt 지원 PSE 시스템용 MCU 도터 카드
PSEMCUDAUEVM-082 is the MSP430 MCU daughter card for TI's 24-port reference designs with the TPS23881 and TPS23882. This board combined with the GUI enables FirmPSE which is TI's production ready system firmware that can deliver system features such as port power management and the use of multiple (...)
TPS23881EVM-008 — IEEE 802.3bt 지원 PoE PSE 애플리케이션을 위한 TPS23881 도터 카드
TPS23881EVM-008 is the daughter card to evaluate the TPS23881 which is a 4-pair, type-4, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23881 which is suitable for high power PSE applications such as (...)
TPS23881EVM-083 — 24포트 PSE 시스템용 IEEE 802.3bt 지원 PSE 도터 카드
TPS23881EVM-008 is a 24-port (48-channel) daughter card to evaluate the TPS23881 which is a 4-pair, type-4, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23881 in high port count applications such (...)
BOOST-PSEMTHR-007 — IEEE 802.3bt 지원 PoE PSE 애플리케이션을 위한 TPS2388x 마더보드
BOOST-PSEMTHR-007 is the base board for the TPS23880 and TPS23881 PSE controllers. This board contains four 2-pair ports that can be used to send up to 30W/port for IEEE 802.3at applications and two 4-pair ports that can be used to send up to 90W/port for IEEE 802.3bt applications.
SLVC772 — TPS2388x EVM GUI
지원되는 제품 및 하드웨어
제품
전력원 장비
하드웨어 개발
평가 보드
도터 카드
개발 키트
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
TIDA-050026-23881 — 멀티 포트 애플리케이션을 위한 24포트(PoE 2, 4페어) 전력원 장비 레퍼런스 설계
패키지 | 핀 | 다운로드 |
---|---|---|
VQFN (RTQ) | 56 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.